// Download by www.cctry.com
#include <future>
#include <iostream>
int find_the_answer_to_ltuae() {
    return 42;
}
void do_other_stuff() {}
int main() {
// return type is <int>
    std::future<int> the_answer=std::async(find_the_answer_to_ltuae);
    do_other_stuff();
    std::cout<<"The answer is "<<the_answer.get()<<std::endl;
}